What is the cheapest airline that flies from Louisville Intl to Sydney Kingsford Smith?

United Airlines is the most popular carrier operating from Louisville Intl to Sydney Kingsford Smith

What airlines fly to Sydney?

Qantas Airways, United Airlines and American Airlines are the top three most popular airlines that fly to Sydney from Louisville according to our data. Qantas Airways is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 5 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

There are 2 operators available for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport as of August 2026.

How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$674 Cheap Flights from Louisville to Sydney in 2026

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Find the cheapest flights from Louisville to Sydney

Round-trip

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Enter your travel dates to find the best prices.

3:37 pm - 6:55 amSDF Louisville Intl-SYD Sydney Kingsford Smith

25h 18m2 stops Houston George Bush Intcntl San Francisco

11:20 am - 8:31 pmSYD Sydney Kingsford Smith-SDF Louisville Intl

24h 11m2 stops San Francisco Chicago O'Hare Intl

$1,301United Airlines

Tue, Sep 29 - Mon, Oct 12

3:36 pm - 7:00 amSDF Louisville Intl-SYD Sydney Kingsford Smith

25h 24m2 stops Denver Intl Los Angeles

10:30 am - 7:55 pmSYD Sydney Kingsford Smith-SDF Louisville Intl

24h 25m2 stops Los Angeles Houston George Bush Intcntl

$1,301United Airlines

Tue, Sep 29 - Sun, Oct 11

3:30 pm - 7:00 amSDF Louisville Intl-SYD Sydney Kingsford Smith

23h 30m1 stop Houston George Bush Intcntl

9:20 am - 1:23 pmSYD Sydney Kingsford Smith-SDF Louisville Intl

20h 03m1 stop Houston George Bush Intcntl

$1,310United Airlines

Tue, Dec 1 - Tue, Dec 8

6:50 am - 7:00 amSDF Louisville Intl-SYD Sydney Kingsford Smith

32h 10m1 stop Houston George Bush Intcntl

9:20 am - 8:09 pmSYD Sydney Kingsford Smith-SDF Louisville Intl

26h 49m1 stop Houston George Bush Intcntl

$1,310United Airlines

Tue, Dec 1 - Tue, Dec 8

12:34 pm - 6:50 amSDF Louisville Intl-SYD Sydney Kingsford Smith

28h 16m2 stops Minneapolis St Paul Los Angeles

10:15 am - 8:35 pmSYD Sydney Kingsford Smith-SDF Louisville Intl

25h 20m2 stops Los Angeles Atlanta Hartsfield-Jackson

$1,315Delta

Wed, Sep 30 - Mon, Oct 12

8:00 am - 8:30 amSDF Louisville Intl-SYD Sydney Kingsford Smith

32h 30m2 stops Atlanta Hartsfield-Jackson Los Angeles

10:40 am - 9:51 pmSYD Sydney Kingsford Smith-SDF Louisville Intl

27h 11m2 stops Los Angeles Atlanta Hartsfield-Jackson

$1,315Delta

Tue, Dec 1 - Tue, Dec 8

3:43 pm - 6:50 amSDF Louisville Intl-SYD Sydney Kingsford Smith

25h 07m2 stops Atlanta Hartsfield-Jackson Los Angeles

10:15 am - 10:51 pmSYD Sydney Kingsford Smith-SDF Louisville Intl

27h 36m2 stops Los Angeles Minneapolis St Paul

$1,351Delta

Tue, Sep 29 - Sat, Oct 10

3:44 pm - 9:00 amSDF Louisville Intl-SYD Sydney Kingsford Smith

25h 16m2 stops Dallas/Fort Worth Los Angeles

2:05 pm - 9:10 pmSYD Sydney Kingsford Smith-SDF Louisville Intl

23h 05m1 stop Dallas/Fort Worth

$1,496Qantas Airways

Sat, Nov 21 - Sat, Nov 28

7:03 am - 8:10 pmSDF Louisville Intl-SYD Sydney Kingsford Smith

47h 07m2 stops Chicago O'Hare Intl Hong Kong Intl

6:15 pm - 9:35 pmSYD Sydney Kingsford Smith-SDF Louisville Intl

42h 20m3 stops Melbourne Hong Kong Intl Chicago O'Hare Intl

$1,515Multiple Airlines

Wed, Sep 30 - Sun, Oct 11

10:58 am - 6:25 amSDF Louisville Intl-SYD Sydney Kingsford Smith

27h 27m3 stops Dallas/Fort Worth Austin Bergstrom Los Angeles

11:05 am - 9:17 pmSYD Sydney Kingsford Smith-SDF Louisville Intl

26h 12m3 stops Brisbane Los Angeles Dallas/Fort Worth

$1,517Multiple Airlines

Wed, Jan 27 - Sat, Feb 13

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Delta flights from Louisville to Sydney

Our best Delta deals on Louisville to Sydney flight tickets

Delta

Sep 30

SDF12:34 pmLouisville Intl

28h 16m

2 stops

SYD6:50 amSydney Kingsford Smith

Oct 12

SYD10:15 amSydney Kingsford Smith

25h 20m

2 stops

SDF8:35 pmLouisville Intl

$1,315

Delta

Sep 29

SDF3:43 pmLouisville Intl

25h 07m

2 stops

SYD6:50 amSydney Kingsford Smith

Oct 10

SYD10:15 amSydney Kingsford Smith

27h 36m

2 stops

SDF10:51 pmLouisville Intl

$1,351

Delta

Oct 1

SDF7:05 amLouisville Intl

33h 45m

2 stops

SYD6:50 amSydney Kingsford Smith

Oct 12

SYD10:15 amSydney Kingsford Smith

27h 36m

2 stops

SDF10:51 pmLouisville Intl

$1,365

Qantas Airways flights from Louisville to Sydney

Our best Qantas Airways deals on Louisville to Sydney flight tickets

Qantas Airways

Nov 21

SDF3:44 pmLouisville Intl

25h 16m

2 stops

SYD9:00 amSydney Kingsford Smith

Nov 28

SYD2:05 pmSydney Kingsford Smith

23h 05m

1 stop

SDF9:10 pmLouisville Intl

$1,496

Qantas Airways

Nov 18

SDF3:51 pmLouisville Intl

23h 04m

1 stop

SYD6:55 amSydney Kingsford Smith

Nov 29

SYD2:05 pmSydney Kingsford Smith

20h 03m

1 stop

SDF6:08 pmLouisville Intl

$1,590

Qantas Airways

Nov 21

SDF6:48 pmLouisville Intl

24h 17m

2 stops

SYD11:05 amSydney Kingsford Smith

Nov 29

SYD2:05 pmSydney Kingsford Smith

20h 03m

1 stop

SDF6:08 pmLouisville Intl

$1,644

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleSydney

SDF Louisville Intl - SYD Sydney Kingsford Smith

SDFSYD

Louisville Intl

Tue 9/29

3:37 pm-6:55 am

2 stops25h 18m

Sydney Kingsford Smith

Mon 10/12

11:20 am-8:31 pm

2 stops24h 11m

$1,301

LouisvilleSydney

SDF Louisville Intl - SYD Sydney Kingsford Smith

SDFSYD

Louisville Intl

Tue 9/29

3:36 pm-7:00 am

2 stops25h 24m

Sydney Kingsford Smith

Sun 10/11

10:30 am-7:55 pm

2 stops24h 25m

$1,301

Quickest round-trip

LouisvilleSydney

SDF Louisville Intl - SYD Sydney Kingsford Smith

SDFSYD

Louisville Intl

Tue 12/1

3:30 pm-7:00 am

1 stop23h 30m

Sydney Kingsford Smith

Tue 12/8

9:20 am-1:23 pm

1 stop20h 03m

$1,310

LouisvilleSydney

SDF Louisville Intl - SYD Sydney Kingsford Smith

SDFSYD

Louisville Intl

Tue 12/1

6:50 am-7:00 am

1 stop32h 10m

Sydney Kingsford Smith

Tue 12/8

9:20 am-8:09 pm

1 stop26h 49m

$1,310

LouisvilleSydney

SDF Louisville Intl - SYD Sydney Kingsford Smith

SDFSYD

Louisville Intl

Wed 9/30

12:34 pm-6:50 am

2 stops28h 16m

Sydney Kingsford Smith

Mon 10/12

10:15 am-8:35 pm

2 stops25h 20m

$1,315

LouisvilleSydney

SDF Louisville Intl - SYD Sydney Kingsford Smith

SDFSYD

Louisville Intl

Tue 12/1

8:00 am-8:30 am

2 stops32h 30m

Sydney Kingsford Smith

Tue 12/8

10:40 am-9:51 pm

2 stops27h 11m

$1,315

LouisvilleSydney

SDF Louisville Intl - SYD Sydney Kingsford Smith

SDFSYD

Louisville Intl

Tue 9/29

3:43 pm-6:50 am

2 stops25h 07m

Sydney Kingsford Smith

Sat 10/10

10:15 am-10:51 pm

2 stops27h 36m

$1,351

LouisvilleSydney

SDF Louisville Intl - SYD Sydney Kingsford Smith

SDFSYD

Louisville Intl

Sat 11/21

3:44 pm-9:00 am

2 stops25h 16m

Sydney Kingsford Smith

Sat 11/28

2:05 pm-9:10 pm

1 stop23h 05m

$1,496

LouisvilleSydney

SDF Louisville Intl - SYD Sydney Kingsford Smith

SDFSYD

Louisville Intl

Wed 9/30

7:03 am-8:10 pm

2 stops47h 07m

Sydney Kingsford Smith

Sun 10/11

6:15 pm-9:35 pm

3 stops42h 20m

$1,515

LouisvilleSydney

SDF Louisville Intl - SYD Sydney Kingsford Smith

SDFSYD

Louisville Intl

Wed 1/27

10:58 am-6:25 am

3 stops27h 27m

Sydney Kingsford Smith

Sat 2/13

11:05 am-9:17 pm

3 stops26h 12m

$1,517

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Louisville to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Sydney?

In general, March is the cheapest month to fly from Louisville to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you are unable to visit Sydney during the month of March, then departing from Louisville during the month August is also very affordable. Most momondo users find prices during this month for around $1,191.

Can stopping save me money on Louisville to Sydney flights?

You could potentially save up to 9% on your flight if you consider stops on a Louisville to Sydney flight.

When to book flights from Louisville to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Louisville to Sydney according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to Sydney

Best Price Found	$674
Fastest flight time	23h 30m
Direct flights	None

The best one-way flight to Sydney from Louisville in the past 72 hours is $674. The best round-trip flight deal from Louisville to Sydney found on momondo in the last 72 hours is $1,301.

The fastest flight from Louisville to Sydney takes 23h 30m

There are no direct flights from Louisville to Sydney. There are no popular flight routes from Louisville to Sydney.

Search flight deals

Frequently asked questions about flying from Louisville to Sydney

How far is Louisville Intl to Sydney Kingsford Smith by plane?
A flight from Louisville Intl to Sydney Kingsford Smith will travel around 9284.6 mi. A reasonable flight in good conditions will take 23h 30m.
When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?
Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?
There are 2 operators available for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport as of August 2026.
How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Louisville to Sydney?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Louisville to Sydney is United Airlines (60% of total bookings). The next most popular airline is Delta (40%).

Best airlines flying from Louisville to Sydney

Compare and see reviews for airlines that fly from Louisville to Sydney with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $1,140	Free Cancellation	Rating 7.8 8,539 reviews		Search Delta flights
United Airlines	PriceFrom $1,228	Free Cancellation	Rating 7.4 10,138 reviews		Search United Airlines flights

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Manly

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Lithgow

Charlestown

Swansea

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to Sydney?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Louisville to Sydney for you.

Can I find flights from Louisville to Sydney with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Louisville to Sydney flights to just show those with flexible booking policies.

How can momondo help me find flights from Louisville to Sydney?

momondo provides multiple filters to help you find the best flight to Sydney from Louisville. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Louisville to Sydney right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Louisville to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

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Cheap flights from Louisville to Sydney from $674

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Sydney departing on 10/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Delta flights from Louisville to Sydney

Our best Delta deals on Louisville to Sydney flight tickets

Qantas Airways flights from Louisville to Sydney

Our best Qantas Airways deals on Louisville to Sydney flight tickets

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How to get the cheapest flight ticket from Louisville to Sydney

What is the cheapest month to fly to Sydney?

Can stopping save me money on Louisville to Sydney flights?

What is the cheapest airline that flies from Louisville Intl to Sydney Kingsford Smith?

What airlines fly to Sydney?

When to book flights from Louisville to Sydney

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Louisville to Sydney

Best airlines flying from Louisville to Sydney

Compare and see reviews for airlines that fly from Louisville to Sydney with momondo

Traveling to a place near Sydney?

Why use momondo?

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Australia

Airports servicing New South Wales

Fly your favorite airline to Sydney

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Sydney

List of cabin classes available on flights landing in Sydney. Availability may vary depending on flight origin and airline.

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